Quantifiable Computable 6-Level Fine-Grained Knowledge Graph
Files:
1) nodes.csv / nodes.jsonl
   - node_id: unique id
   - level: 1-6 (course/module/theme/concept/proposition/evidence)
   - content: full text
   - source_module: Module1/2/3 if available
   - quant_features: JSON with extracted numbers/percents/year_ranges/ratios
   - weight: heuristic importance score
   - tags: keyword tags

2) edges.csv / edges.jsonl
   - contains: structural parent->child edges
   - exemplifies: evidence -> proposition semantic edges (when applicable)

3) six_level_kg.graphml
   - GraphML for Gephi / yEd / Cytoscape / NetworkX.

4) audit_table.csv
   - quick audit and traceability table.
